Unctuous composition of matter for mechanical usages



UMED stares PATENT. QFICE.

HAROLD F. WHEEIJOCK, OF DENVER, COLORADO, ASSIG-NOR TO THE SWAN PROCESS OIL COMPANY, OF DENVER, COLORADO, A CORPORATION OF COLOR-ADO.

UNCTUOUS COMPOSITION OF MATTER FOR MECHANICAL USAGES.

No Drawing.

1 T 0 all '10 ham it may concern Be it known that I, HAioLD F. VVHEELocK, a citizen of the United States, residing at the city and county of Denver and .State of Colorado, have invented a new and useful Unctuous Composition of Matter for Mechanical Usages, of which the following is a specification.

This invention relates to an unctuous composition of matter for mechanical usages, and more particularly embodies va more or less greasy admixture of an absorptive silicious base, reduced by a fluid or semifiuid lubricant to a pasty consistency, rendering it peculiarly effective for certain applications as hereinafter specified.

The primary object of the invention is the production of such a thickened or salvelike compound to be applied between coacting bearing surfaces of certain mechanically associated parts, such as brake-drums and their cocperating brakebands, serving as a sound-deadening or anti-squeak compound, but without suificicnt antifriction lubricating properties as to promote a slipping or non-gripping action, and hence ineffective binding, between the braking elements, when braking is desired.

As applied to braking elements, straight oils and other true lubricants are manifestly inadequate, both because they too fully lubricate the parts, resulting in absolute slipping, an obviously serious objection, and also because, owing to their mobile nature, they run off too freely to waste, and the parts soon become dry and squeaky again. The ordinary oily plastic substances or greases meet with the same objections, the overcoming of which has been attempted by the use of soap-like wafers and analogous substances, but likewise they have proven to be inadequately substantial, more especially in that they are susceptible to rapid deterioration and wearing away. and a satisfactory base must be employed which will absorbingly retain, in a plastic state, its impregnating lubricant the greatest length of time.

It is essentially desirable. therefore, that such compounds primarily have maximum cohesiveness, in avoidance of decomposition, with a minimum slippery property. but of slightly adhesive tenacity,to just sufficiently grease or ease up the braking elements with- Specificat ion of Letters Patent.

Application filed April 7, 1919. Serial No. 287,996.

out impairing their effective binding by a freer lubrication thereof-thus insuring safety first at all events; and secondarily that they be not only of a more or less pasty or salve-like immobility, but also that the admixture has the important characteristics of not being easily worn out by mechanical wear nor liable to become unduly gummy, thus insuring an almost indefinitely prolonged effective use Without a renewed application.

It is now well understood that lubricating oils do not wear out mechanically, and have discovered that an absorptive silicious base, generically, therefor proves very effective; but that even better results are assured by the use of infusorial silica, and more particularly ground-up uncalcined kieselguhr, which when admixed with a lubricating oil of low viscosity provides a spongy mass of approximately correct characteristics.

The kieselguhr may be used in its natural mined state, after pulverization, it being readily reducible to a powder as soft and smooth as a milled flour; but in actual practice I find that I may very satisfactorily utilize the filtration cakes formed in carrying out certain oil purifying processes, employing inert powdered kieselguhr as an absorptive and fiotative filtering medium, both in point of economy, by reclaiming an otherwise'waste residue, and also because such filtration waste matter, when properly treatedQfunctions in my improved compound with pronounced beneficial results even over the use of uncalcined or raw kieselguhr. The certain oil purifying processes mentioned may be specifically identified by reference to the O. C. Swan United States Letters Patent issued on December 18, 1917, under #1,250,526 and #1250527;

These oil filtration cakes, especially when removed from such purification systems, as aforesaid, for reclaiming used lubricating oils from automobile engines, naturally retain a small amount of oil, not expressed therethrough, together with certain absorbed foreign substances such as road dust probably, worn away or ground up metal, suspended carbon, and doubtless some col loidal or other organic matter from the oils treated, which combination, for reasons not I up into a pulpous mass.

As a specific example of a proper quantity of each ingredient, when plain or free kieselguhr or the like is used, the composition may be thoroughly admixed in approximately the following proportions:

Crushed kieselguhr 12 pounds. Lubricating oil of low viscos1ty- 3 pints.

As another specific instance, where a pulpous base is employed which is the waste residue, or oil filtration cakes, from mineral oil purification systems as hereinbefore mentloned, the cakes themselves are fairly impregnated with absorbed oil, so that only about one-third of the amount of make-up oil will be additionally required, when the proportionate amounts will then be approximately Crushed filtration cake 12 pounds. Lubricating oil of low viscosity 1 pint.

- Either of the foregoing admixtures will provide a substantially non-acidulous and ,unwate'ry plastic composition of an immobile "or salve-like consistency, which product has a mildly greasy property and yet is slightly viscous to insure a sufficiently tenacious adherence to the greased parts, whereby squeaking or grating noises are eliminated but without interfering with the effectual binding action, essential to frictionally cooperating braking elements.

It is also highly desirable, as a commercial expedient especially, that the composition has a pleasing odor, which is satisfactorily accomplished by suitably mixing in an appropriate quantity of a scenting agent as desired, suchfor instance as oil of mirbane or the like, and the proportionate amount of this scenting agent, for each of the above admixtures, would be approximately twenty centiliters.

In such a condition, the admixture is ready for packaging in cans or other suitable receptacles in large or small quantities, but where it is to be marketed in collapsible dispensing tubes especially, it is preferable to also introduce into the admixed composition a suitable thinning agent, such as gasolene or naphtha or other highly volatile cutting liquid, just sufficiently proportionate to give the substance a shade more of plasticity, to enable its being more facilely squeezed out of the usual dispensing tip of the tube, in ribbon form or as otherwlse desired, and which volatile thinning agent is promptly evaporated off Crushed filtration cake 12 pounds. Lubricating oil 'of low viscosit 1 pint.

Highly v 01 a t i l e thinning agent, such as gasolene, or

the like 3 pints. Scenting agent, such as oil of mirbane or the like 20 centiliters.

While I have thus particularly disclosed my invention, it will nevertheless be understood that I do not restrict myself necessarily to the exact proportions as stated in any of the specific instances, and also that the ingredients may be compounded in much larger and even smaller proportionate quantities than those set forth.

What I do claim, as new and patentable, is v 1. An anti-squeak composition of matter, compounded from an oil absorptive insoluble earthy base, so proportionately combined and thoroughly admixed with a comparatively small quantity of mineral lubricating oil of low viscosity as to provide an unctuous compound of pasty consistency, substantially as described. V

2. An anti-squeak composition of matter, compounded from a major suitable base of infusorial earthy substance, so proportionately combined and thoroughly admixed with a comparatively minimum quantity of lubricating oil of low viscosity as to provide an unctuous compound of pasty consistency, substantially as described.

3. An anti-squeak composition of matter, compounded from a major suitable base, substantially consisting of kieselguhr, so proportionately combined and thoroughly admixed with a comparatively minimum quantity of mineral lubricating oil of low viscosity as to provide an unctuous com: pound of pasty consistency, substantially as described.

4. An anti-squeak composition of matter, compounded from a major suitable base, substantially consisting of an oil absorptive insoluble earthy substance, so porportionately combined and thoroughly admixed with a comparatively minimum quantity of lubricating oil of low viscosity as to provide an unctuous compound of pasty consistency, and the further addition of a highly volatile thinning agent, for cutting down the consistency of the paste to a state of qualri; plasticity, for packaging pur poses, su stantially as described.

5. An anti-squeak composition of matter, compounded from a major spongy base, consisting of a ground-up mass of oil filtration cakes, which latter are the waste residue from mineral oil purification systems as hereinbefore disclosed, so proportionately combined and thoroughly admixed with a comparatively minimum quantity of added mineral lubricating oil of low viscosity as to provide an unctuous compound of pasty consistency, substantially as described.

6. An anti-squeak com osition of matter, compounded from the ents in the comparativel ap roximate proportions of twelve poun s 0 an oil absorpproportions of twelve ollo'wing constitutive insoluble base, three pints of lubricating oil of low viscosity, and three pints of a highly volatile thinning agent, all thoroughl/y admixed, substantially as described. 7. n anti-squeak composition of'matter of unctuous properties and plastic consistency, compounded from the following constituents in the comparatively a proximate bands of an oil ab sorptive earthyinsolu le base, three pints of lubricatin oil of low viscosity, three pints of a highl volatile thinning agent, and twenty centi iters of a suitable scenting agent, all thoroughly admixed, substantially as described.

In testimony whereof, I afiix my signature.

HAROLD F. WHEELOCK. 

